<template>
  <div class="app-container">

    <!--    <h2 style="text-align: center;">发布新课程</h2>-->

    <el-steps :active="2" finish-status="success" process-status="finish" simple align-center
              style="margin-bottom: 40px;">
      <el-step title="填写课程基本信息"/>
      <el-step title="创建课程大纲"/>
      <el-step title="提交审核"/>
    </el-steps>

    <div class="ccInfo">
      <img :src="coursePublish.cover">
      <div class="main">
        <h2>{{ coursePublish.title }}</h2>
        <p class="gray"><span>共{{ coursePublish.lessonNum }}课时</span></p>
        <p><span>所属分类：{{ coursePublish.subjectLevelOne }} — {{ coursePublish.subjectLevelTwo }}</span></p>
        <p>课程讲师：{{ coursePublish.teacherName }}</p>
        <h3 class="red">￥{{ coursePublish.price }}</h3>
      </div>
    </div>
    <div class="descBox">
      <p>简介：</p>
      <div class="descMain" v-html="coursePublish.description"></div>
    </div>
    <div>
      <el-button @click="previous">返回修改</el-button>
      <el-button :disabled="saveBtnDisabled" type="primary" @click="publish">发布课程</el-button>
    </div>

  </div>
</template>


<script>
  import course from '@/api/edu/course'

  export default {
    data() {
      return {
        saveBtnDisabled: false// 保存按钮是否禁用
        , courseId: '' // 所属课程
        , coursePublish: {}
      }
    },

    created() {
      console.log('publish created')
      this.init()
    },

    methods: {
      //1. 上一页
      previous() {
        console.log('previous')
        this.$router.push({ path: '/course/chapter/' + this.courseId  })
      },
      //2. 下一页 发布
      publish() {
        console.log('publish')
        course.publishCourse(this.courseId).then(response => {
          this.$message.success('发布成功')
          this.$router.push({ path: '/course/list' })
        })
      },
      //3. 初始化
      init() {
        if (this.$route.params && this.$route.params.id) {
          this.courseId = this.$route.params.id
          // 根据id获取课程基本信息
          this.fetchCoursePublishInfoById()
        }
      },
      //4. 根据课程id获取最终发布信息
      fetchCoursePublishInfoById() {
        course.getCoursePublishInfoById(this.courseId).then(response => {
          this.coursePublish = response.data.item
        })
      },
    }
  }
</script>

<style scoped>
  .ccInfo {
    background: #f5f5f5;
    padding: 20px;
    overflow: hidden;
    border: 1px dashed #DDD;
    margin-bottom: 40px;
    position: relative;
  }
  .ccInfo img {
    background: #d6d6d6;
    width: 500px;
    height: 278px;
    display: block;
    float: left;
    border: none;
  }
  .ccInfo .main {
    margin-left: 520px;
  }

  .ccInfo .main h2 {
    font-size: 28px;
    margin-bottom: 30px;
    line-height: 1;
    font-weight: normal;
  }
  .ccInfo .main p {
    margin-bottom: 10px;
    word-wrap: break-word;
    line-height: 24px;
    max-height: 48px;
    overflow: hidden;
  }

  .ccInfo .main p {
    margin-bottom: 10px;
    word-wrap: break-word;
    line-height: 24px;
    max-height: 48px;
    overflow: hidden;
  }
  .ccInfo .main h3 {
    left: 540px;
    bottom: 20px;
    line-height: 1;
    font-size: 28px;
    color: #d32f24;
    font-weight: normal;
    position: absolute;
  }
  .descBox{
    box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.1);
    padding: 10px 0px;
    /*margin: 0 520px 30px 520px  ;*/
    margin-bottom: 30px;
    min-width: 780px;
  }
  .descBox p{
    width: 50px;
    margin: 0 auto;
    font-weight: bold;
  }
  .descMain{
    padding: 0 30px;
    line-height: 30px;
    font: 14px Base;
  }
</style>
